@font-face{
    font-family: 'pingfang regular';
    src: url('PingFang Regular.ttf');
    font-weight: normal;
    font-style: normal;
  }  
@font-face {
  font-family: 'pingfang medium';
  src: url('PingFang Medium.ttf');
  font-weight: normal;
  font-style: normal;
}
@font-face{
  font-family: 'pingfang bold';
  src: url('PingFang Bold.ttf');
  font-weight: normal;
  font-style: normal;
}


.regular{font-family:'pingfang regular';}
.medium{font-family:'pingfang medium';}
.bold{font-family:'pingfang bold';}